fileio-posix.cpp@ 27042

Last change on this file since 27042 was 26761, checked in by vboxsync, 15 years ago
IPRT: Implemented RTFileOpenBitBucket.
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File size: 21.5 KB

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1	/* $Id: fileio-posix.cpp 26761 2010-02-24 18:57:58Z vboxsync $ */
2	/** @file
3	* IPRT - File I/O, POSIX.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*
17	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*
26	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27	* Clara, CA 95054 USA or visit http://www.sun.com if you need
28	* additional information or have any questions.
29	*/
30
31
32	/*******************************************************************************
33	* Header Files *
34	*******************************************************************************/
35	#define LOG_GROUP RTLOGGROUP_FILE
36
37	#include <errno.h>
38	#include <sys/stat.h>
39	#include <sys/types.h>
40	#include <sys/ioctl.h>
41	#include <sys/fcntl.h>
42	#include <fcntl.h>
43	#ifdef _MSC_VER
44	# include <io.h>
45	# include <stdio.h>
46	#else
47	# include <unistd.h>
48	# include <sys/time.h>
49	#endif
50	#ifdef RT_OS_LINUX
51	# include <sys/file.h>
52	#endif
53	#if defined(RT_OS_OS2) && (!defined(__INNOTEK_LIBC__) \|\| __INNOTEK_LIBC__ < 0x006)
54	# include <io.h>
55	#endif
56	#ifdef RT_OS_L4
57	/* This is currently ifdef'ed out in the relevant L4 header file */
58	/* Same as `utimes', but takes an open file descriptor instead of a name. */
59	extern int futimes(int __fd, __const struct timeval __tvp[2]) __THROW;
60	#endif
61
62	#ifdef RT_OS_SOLARIS
63	# define futimes(filedes, timeval) futimesat(filedes, NULL, timeval)
64	#endif
65
66	#include <iprt/file.h>
67	#include <iprt/path.h>
68	#include <iprt/assert.h>
69	#include <iprt/string.h>
70	#include <iprt/err.h>
71	#include <iprt/log.h>
72	#include "internal/file.h"
73	#include "internal/fs.h"
74	#include "internal/path.h"
75
76
77
78	/*******************************************************************************
79	* Defined Constants And Macros *
80	*******************************************************************************/
81	/** @def RT_DONT_CONVERT_FILENAMES
82	* Define this to pass UTF-8 unconverted to the kernel. */
83	#ifdef DOXYGEN_RUNNING
84	#define RT_DONT_CONVERT_FILENAMES 1
85	#endif
86
87	/** Default file permissions for newly created files. */
88	#if defined(S_IRUSR) && defined(S_IWUSR)
89	# define RT_FILE_PERMISSION (S_IRUSR \| S_IWUSR)
90	#else
91	# define RT_FILE_PERMISSION (00600)
92	#endif
93
94
95	RTDECL(bool) RTFileExists(const char *pszPath)
96	{
97	bool fRc = false;
98	char *pszNativePath;
99	int rc = rtPathToNative(&pszNativePath, pszPath);
100	if (RT_SUCCESS(rc))
101	{
102	struct stat s;
103	fRc = !stat(pszNativePath, &s)
104	&& S_ISREG(s.st_mode);
105
106	rtPathFreeNative(pszNativePath);
107	}
108
109	LogFlow(("RTFileExists(%p={%s}): returns %RTbool\n", pszPath, pszPath, fRc));
110	return fRc;
111	}
112
113
114	RTR3DECL(int) RTFileOpen(PRTFILE pFile, const char *pszFilename, uint32_t fOpen)
115	{
116	/*
117	* Validate input.
118	*/
119	AssertPtrReturn(pFile, VERR_INVALID_POINTER);
120	*pFile = NIL_RTFILE;
121	AssertPtrReturn(pszFilename, VERR_INVALID_POINTER);
122
123	/*
124	* Merge forced open flags and validate them.
125	*/
126	int rc = rtFileRecalcAndValidateFlags(&fOpen);
127	if (RT_FAILURE(rc))
128	return rc;
129	#ifndef O_NONBLOCK
130	if (fOpen & RTFILE_O_NON_BLOCK)
131	{
132	AssertMsgFailed(("Invalid parameters! fOpen=%#x\n", fOpen));
133	return VERR_INVALID_PARAMETER;
134	}
135	#endif
136
137	/*
138	* Calculate open mode flags.
139	*/
140	int fOpenMode = 0;
141	#ifdef O_BINARY
142	fOpenMode \|= O_BINARY; /* (pc) */
143	#endif
144	#ifdef O_LARGEFILE
145	fOpenMode \|= O_LARGEFILE; /* (linux) */
146	#endif
147	#ifdef O_NOINHERIT
148	if (!(fOpen & RTFILE_O_INHERIT))
149	fOpenMode \|= O_NOINHERIT;
150	#endif
151	#ifdef O_NONBLOCK
152	if (fOpen & RTFILE_O_NON_BLOCK)
153	fOpenMode \|= O_NONBLOCK;
154	#endif
155	#ifdef O_SYNC
156	if (fOpen & RTFILE_O_WRITE_THROUGH)
157	fOpenMode \|= O_SYNC;
158	#endif
159	#if defined(O_DIRECT) && defined(RT_OS_LINUX)
160	/* O_DIRECT is mandatory to get async I/O working on Linux. */
161	if (fOpen & RTFILE_O_ASYNC_IO)
162	fOpenMode \|= O_DIRECT;
163	#endif
164	#if defined(O_DIRECT) && (defined(RT_OS_LINUX) \|\| defined(RT_OS_FREEBSD))
165	/* Disable the kernel cache. */
166	if (fOpen & RTFILE_O_NO_CACHE)
167	fOpenMode \|= O_DIRECT;
168	#endif
169
170	/* create/truncate file */
171	switch (fOpen & RTFILE_O_ACTION_MASK)
172	{
173	case RTFILE_O_OPEN: break;
174	case RTFILE_O_OPEN_CREATE: fOpenMode \|= O_CREAT; break;
175	case RTFILE_O_CREATE: fOpenMode \|= O_CREAT \| O_EXCL; break;
176	case RTFILE_O_CREATE_REPLACE: fOpenMode \|= O_CREAT \| O_TRUNC; break; /** @todo replacing needs fixing, this is not a 1:1 mapping! */
177	}
178	if (fOpen & RTFILE_O_TRUNCATE)
179	fOpenMode \|= O_TRUNC;
180
181	switch (fOpen & RTFILE_O_ACCESS_MASK)
182	{
183	case RTFILE_O_READ:
184	fOpenMode \|= O_RDONLY; /* RTFILE_O_APPEND is ignored. */
185	break;
186	case RTFILE_O_WRITE:
187	fOpenMode \|= fOpen & RTFILE_O_APPEND ? O_APPEND \| O_WRONLY : O_WRONLY;
188	break;
189	case RTFILE_O_READWRITE:
190	fOpenMode \|= fOpen & RTFILE_O_APPEND ? O_APPEND \| O_RDWR : O_RDWR;
191	break;
192	default:
193	AssertMsgFailed(("RTFileOpen received an invalid RW value, fOpen=%#x\n", fOpen));
194	return VERR_INVALID_PARAMETER;
195	}
196
197	/* File mode. */
198	int fMode = (fOpen & RTFILE_O_CREATE_MODE_MASK)
199	? (fOpen & RTFILE_O_CREATE_MODE_MASK) >> RTFILE_O_CREATE_MODE_SHIFT
200	: RT_FILE_PERMISSION;
201
202	/** @todo sharing! */
203
204	/*
205	* Open/create the file.
206	*/
207	#ifdef RT_DONT_CONVERT_FILENAMES
208	int fh = open(pszFilename, fOpenMode, fMode);
209	int iErr = errno;
210	#else
211	char *pszNativeFilename;
212	rc = rtPathToNative(&pszNativeFilename, pszFilename);
213	if (RT_FAILURE(rc))
214	return (rc);
215
216	int fh = open(pszNativeFilename, fOpenMode, fMode);
217	int iErr = errno;
218	rtPathFreeNative(pszNativeFilename);
219	#endif
220	if (fh >= 0)
221	{
222	iErr = 0;
223
224	/*
225	* Mark the file handle close on exec, unless inherit is specified.
226	*/
227	if ( (fOpen & RTFILE_O_INHERIT)
228	#ifdef O_NOINHERIT
229	&& !(fOpenMode & O_NOINHERIT) /* Take care since it might be a zero value dummy. */
230	#endif
231	)
232	iErr = fcntl(fh, F_SETFD, FD_CLOEXEC) >= 0 ? 0 : errno;
233
234	/*
235	* Switch direct I/O on now if requested and required.
236	*/
237	#if defined(RT_OS_DARWIN) \
238	\|\| (defined(RT_OS_SOLARIS) && !defined(IN_GUEST))
239	if (iErr == 0 && (fOpen & RTFILE_O_NO_CACHE))
240	{
241	# if defined(RT_OS_DARWIN)
242	iErr = fcntl(fh, F_NOCACHE, 1) >= 0 ? 0 : errno;
243	# else
244	iErr = directio(fh, DIRECTIO_ON) >= 0 ? 0 : errno;
245	# endif
246	}
247	#endif
248
249	/*
250	* Implement / emulate file sharing.
251	*
252	* We need another mode which allows skipping this stuff completely
253	* and do things the UNIX way. So for the present this is just a debug
254	* aid that can be enabled by developers too lazy to test on Windows.
255	*/
256	#if 0 && defined(RT_OS_LINUX)
257	if (iErr == 0)
258	{
259	/* This approach doesn't work because only knfsd checks for these
260	buggers. :-( */
261	int iLockOp;
262	switch (fOpen & RTFILE_O_DENY_MASK)
263	{
264	default:
265	AssertFailed();
266	case RTFILE_O_DENY_NONE:
267	case RTFILE_O_DENY_NOT_DELETE:
268	iLockOp = LOCK_MAND \| LOCK_READ \| LOCK_WRITE;
269	break;
270	case RTFILE_O_DENY_READ:
271	case RTFILE_O_DENY_READ \| RTFILE_O_DENY_NOT_DELETE:
272	iLockOp = LOCK_MAND \| LOCK_WRITE;
273	break;
274	case RTFILE_O_DENY_WRITE:
275	case RTFILE_O_DENY_WRITE \| RTFILE_O_DENY_NOT_DELETE:
276	iLockOp = LOCK_MAND \| LOCK_READ;
277	break;
278	case RTFILE_O_DENY_WRITE \| RTFILE_O_DENY_READ:
279	case RTFILE_O_DENY_WRITE \| RTFILE_O_DENY_READ \| RTFILE_O_DENY_NOT_DELETE:
280	iLockOp = LOCK_MAND;
281	break;
282	}
283	iErr = flock(fh, iLockOp \| LOCK_NB);
284	if (iErr != 0)
285	iErr = errno == EAGAIN ? ETXTBSY : 0;
286	}
287	#endif /* 0 && RT_OS_LINUX */
288	#ifdef DEBUG_bird
289	if (iErr == 0)
290	{
291	/* This emulation is incomplete but useful. */
292	switch (fOpen & RTFILE_O_DENY_MASK)
293	{
294	default:
295	AssertFailed();
296	case RTFILE_O_DENY_NONE:
297	case RTFILE_O_DENY_NOT_DELETE:
298	case RTFILE_O_DENY_READ:
299	case RTFILE_O_DENY_READ \| RTFILE_O_DENY_NOT_DELETE:
300	break;
301	case RTFILE_O_DENY_WRITE:
302	case RTFILE_O_DENY_WRITE \| RTFILE_O_DENY_NOT_DELETE:
303	case RTFILE_O_DENY_WRITE \| RTFILE_O_DENY_READ:
304	case RTFILE_O_DENY_WRITE \| RTFILE_O_DENY_READ \| RTFILE_O_DENY_NOT_DELETE:
305	if (fOpen & RTFILE_O_WRITE)
306	{
307	iErr = flock(fh, LOCK_EX \| LOCK_NB);
308	if (iErr != 0)
309	iErr = errno == EAGAIN ? ETXTBSY : 0;
310	}
311	break;
312	}
313	}
314	#endif
315	#ifdef RT_OS_SOLARIS
316	/** @todo Use fshare_t and associates, it's a perfect match. see sys/fcntl.h */
317	#endif
318
319	/*
320	* We're done.
321	*/
322	if (iErr == 0)
323	{
324	*pFile = (RTFILE)fh;
325	Assert((int)*pFile == fh);
326	LogFlow(("RTFileOpen(%p:{%RTfile}, %p:{%s}, %#x): returns %Rrc\n",
327	pFile, *pFile, pszFilename, pszFilename, fOpen, rc));
328	return VINF_SUCCESS;
329	}
330
331	close(fh);
332	}
333	return RTErrConvertFromErrno(iErr);
334	}
335
336
337	RTR3DECL(int) RTFileOpenBitBucket(PRTFILE phFile, uint32_t fAccess)
338	{
339	AssertReturn( fAccess == RTFILE_O_READ
340	\|\| fAccess == RTFILE_O_WRITE
341	\|\| fAccess == RTFILE_O_READWRITE,
342	VERR_INVALID_PARAMETER);
343	return RTFileOpen(phFile, "/dev/null", fAccess \| RTFILE_O_DENY_NONE \| RTFILE_O_OPEN);
344	}
345
346
347	RTR3DECL(int) RTFileClose(RTFILE File)
348	{
349	if (close((int)File) == 0)
350	return VINF_SUCCESS;
351	return RTErrConvertFromErrno(errno);
352	}
353
354
355	RTR3DECL(int) RTFileFromNative(PRTFILE pFile, RTHCINTPTR uNative)
356	{
357	if ( uNative < 0
358	\|\| (RTFILE)uNative != (RTUINTPTR)uNative)
359	{
360	AssertMsgFailed(("%p\n", uNative));
361	*pFile = NIL_RTFILE;
362	return VERR_INVALID_HANDLE;
363	}
364	*pFile = (RTFILE)uNative;
365	return VINF_SUCCESS;
366	}
367
368
369	RTR3DECL(RTHCINTPTR) RTFileToNative(RTFILE File)
370	{
371	AssertReturn(File != NIL_RTFILE, -1);
372	return (RTHCINTPTR)File;
373	}
374
375
376	RTR3DECL(int) RTFileDelete(const char *pszFilename)
377	{
378	char *pszNativeFilename;
379	int rc = rtPathToNative(&pszNativeFilename, pszFilename);
380	if (RT_SUCCESS(rc))
381	{
382	if (unlink(pszNativeFilename) != 0)
383	rc = RTErrConvertFromErrno(errno);
384	rtPathFreeNative(pszNativeFilename);
385	}
386	return rc;
387	}
388
389
390	RTR3DECL(int) RTFileSeek(RTFILE File, int64_t offSeek, unsigned uMethod, uint64_t *poffActual)
391	{
392	static const unsigned aSeekRecode[] =
393	{
394	SEEK_SET,
395	SEEK_CUR,
396	SEEK_END,
397	};
398
399	/*
400	* Validate input.
401	*/
402	if (uMethod > RTFILE_SEEK_END)
403	{
404	AssertMsgFailed(("Invalid uMethod=%d\n", uMethod));
405	return VERR_INVALID_PARAMETER;
406	}
407
408	/* check that within off_t range. */
409	if ( sizeof(off_t) < sizeof(offSeek)
410	&& ( (offSeek > 0 && (unsigned)(offSeek >> 32) != 0)
411	\|\| (offSeek < 0 && (unsigned)(-offSeek >> 32) != 0)))
412	{
413	AssertMsgFailed(("64-bit search not supported\n"));
414	return VERR_NOT_SUPPORTED;
415	}
416
417	off_t offCurrent = lseek((int)File, (off_t)offSeek, aSeekRecode[uMethod]);
418	if (offCurrent != ~0)
419	{
420	if (poffActual)
421	*poffActual = (uint64_t)offCurrent;
422	return VINF_SUCCESS;
423	}
424	return RTErrConvertFromErrno(errno);
425	}
426
427
428	RTR3DECL(int) RTFileRead(RTFILE File, void pvBuf, size_t cbToRead, size_t pcbRead)
429	{
430	if (cbToRead <= 0)
431	return VINF_SUCCESS;
432
433	/*
434	* Attempt read.
435	*/
436	ssize_t cbRead = read((int)File, pvBuf, cbToRead);
437	if (cbRead >= 0)
438	{
439	if (pcbRead)
440	/* caller can handle partial read. */
441	*pcbRead = cbRead;
442	else
443	{
444	/* Caller expects all to be read. */
445	while ((ssize_t)cbToRead > cbRead)
446	{
447	ssize_t cbReadPart = read((int)File, (char*)pvBuf + cbRead, cbToRead - cbRead);
448	if (cbReadPart <= 0)
449	{
450	if (cbReadPart == 0)
451	return VERR_EOF;
452	return RTErrConvertFromErrno(errno);
453	}
454	cbRead += cbReadPart;
455	}
456	}
457	return VINF_SUCCESS;
458	}
459
460	return RTErrConvertFromErrno(errno);
461	}
462
463
464	RTR3DECL(int) RTFileWrite(RTFILE File, const void pvBuf, size_t cbToWrite, size_t pcbWritten)
465	{
466	if (cbToWrite <= 0)
467	return VINF_SUCCESS;
468
469	/*
470	* Attempt write.
471	*/
472	ssize_t cbWritten = write((int)File, pvBuf, cbToWrite);
473	if (cbWritten >= 0)
474	{
475	if (pcbWritten)
476	/* caller can handle partial write. */
477	*pcbWritten = cbWritten;
478	else
479	{
480	/* Caller expects all to be write. */
481	while ((ssize_t)cbToWrite > cbWritten)
482	{
483	ssize_t cbWrittenPart = write((int)File, (const char *)pvBuf + cbWritten, cbToWrite - cbWritten);
484	if (cbWrittenPart <= 0)
485	return RTErrConvertFromErrno(errno);
486	cbWritten += cbWrittenPart;
487	}
488	}
489	return VINF_SUCCESS;
490	}
491	return RTErrConvertFromErrno(errno);
492	}
493
494
495	RTR3DECL(int) RTFileSetSize(RTFILE File, uint64_t cbSize)
496	{
497	/*
498	* Validate offset.
499	*/
500	if ( sizeof(off_t) < sizeof(cbSize)
501	&& (cbSize >> 32) != 0)
502	{
503	AssertMsgFailed(("64-bit filesize not supported! cbSize=%lld\n", cbSize));
504	return VERR_NOT_SUPPORTED;
505	}
506
507	#if defined(_MSC_VER) \|\| (defined(RT_OS_OS2) && (!defined(__INNOTEK_LIBC__) \|\| __INNOTEK_LIBC__ < 0x006))
508	if (chsize((int)File, (off_t)cbSize) == 0)
509	#else
510	/* This relies on a non-standard feature of FreeBSD, Linux, and OS/2
511	* LIBC v0.6 and higher. (SuS doesn't define ftruncate() and size bigger
512	* than the file.)
513	*/
514	if (ftruncate((int)File, (off_t)cbSize) == 0)
515	#endif
516	return VINF_SUCCESS;
517	return RTErrConvertFromErrno(errno);
518	}
519
520
521	RTR3DECL(int) RTFileGetSize(RTFILE File, uint64_t *pcbSize)
522	{
523	struct stat st;
524	if (!fstat((int)File, &st))
525	{
526	*pcbSize = st.st_size;
527	return VINF_SUCCESS;
528	}
529	return RTErrConvertFromErrno(errno);
530	}
531
532
533	/**
534	* Determine the maximum file size.
535	*
536	* @returns IPRT status code.
537	* @param File Handle to the file.
538	* @param pcbMax Where to store the max file size.
539	* @see RTFileGetMaxSize.
540	*/
541	RTR3DECL(int) RTFileGetMaxSizeEx(RTFILE File, PRTFOFF pcbMax)
542	{
543	/*
544	* Save the current location
545	*/
546	uint64_t offOld;
547	int rc = RTFileSeek(File, 0, RTFILE_SEEK_CURRENT, &offOld);
548	if (RT_FAILURE(rc))
549	return rc;
550
551	/*
552	* Perform a binary search for the max file size.
553	*/
554	uint64_t offLow = 0;
555	uint64_t offHigh = 8 * _1T; /* we don't need bigger files */
556	/** @todo Unfortunately this does not work for certain file system types,
557	* for instance cifs mounts. Even worse, statvfs.f_fsid returns 0 for such
558	* file systems. */
559	//uint64_t offHigh = INT64_MAX;
560	for (;;)
561	{
562	uint64_t cbInterval = (offHigh - offLow) >> 1;
563	if (cbInterval == 0)
564	{
565	if (pcbMax)
566	*pcbMax = offLow;
567	return RTFileSeek(File, offOld, RTFILE_SEEK_BEGIN, NULL);
568	}
569
570	rc = RTFileSeek(File, offLow + cbInterval, RTFILE_SEEK_BEGIN, NULL);
571	if (RT_FAILURE(rc))
572	offHigh = offLow + cbInterval;
573	else
574	offLow = offLow + cbInterval;
575	}
576	}
577
578
579	RTR3DECL(bool) RTFileIsValid(RTFILE File)
580	{
581	if (File != NIL_RTFILE)
582	{
583	int fFlags = fcntl(File, F_GETFD);
584	if (fFlags >= 0)
585	return true;
586	}
587	return false;
588	}
589
590
591	RTR3DECL(int) RTFileFlush(RTFILE File)
592	{
593	if (fsync((int)File))
594	return RTErrConvertFromErrno(errno);
595	return VINF_SUCCESS;
596	}
597
598
599	RTR3DECL(int) RTFileIoCtl(RTFILE File, unsigned long ulRequest, void pvData, unsigned cbData, int piRet)
600	{
601	int rc = ioctl((int)File, ulRequest, pvData);
602	if (piRet)
603	*piRet = rc;
604	return rc >= 0 ? VINF_SUCCESS : RTErrConvertFromErrno(errno);
605	}
606
607
608	RTR3DECL(int) RTFileQueryInfo(RTFILE File, PRTFSOBJINFO pObjInfo, RTFSOBJATTRADD enmAdditionalAttribs)
609	{
610	/*
611	* Validate input.
612	*/
613	if (File == NIL_RTFILE)
614	{
615	AssertMsgFailed(("Invalid File=%RTfile\n", File));
616	return VERR_INVALID_PARAMETER;
617	}
618	if (!pObjInfo)
619	{
620	AssertMsgFailed(("Invalid pObjInfo=%p\n", pObjInfo));
621	return VERR_INVALID_PARAMETER;
622	}
623	if ( enmAdditionalAttribs < RTFSOBJATTRADD_NOTHING
624	\|\| enmAdditionalAttribs > RTFSOBJATTRADD_LAST)
625	{
626	AssertMsgFailed(("Invalid enmAdditionalAttribs=%p\n", enmAdditionalAttribs));
627	return VERR_INVALID_PARAMETER;
628	}
629
630	/*
631	* Query file info.
632	*/
633	struct stat Stat;
634	if (fstat((int)File, &Stat))
635	{
636	int rc = RTErrConvertFromErrno(errno);
637	Log(("RTFileQueryInfo(%RTfile,,%d): returns %Rrc\n", File, enmAdditionalAttribs, rc));
638	return rc;
639	}
640
641	/*
642	* Setup the returned data.
643	*/
644	rtFsConvertStatToObjInfo(pObjInfo, &Stat, NULL, 0);
645
646	/*
647	* Requested attributes (we cannot provide anything actually).
648	*/
649	switch (enmAdditionalAttribs)
650	{
651	case RTFSOBJATTRADD_EASIZE:
652	pObjInfo->Attr.enmAdditional = RTFSOBJATTRADD_EASIZE;
653	pObjInfo->Attr.u.EASize.cb = 0;
654	break;
655
656	case RTFSOBJATTRADD_NOTHING:
657	case RTFSOBJATTRADD_UNIX:
658	/* done */
659	break;
660
661	default:
662	AssertMsgFailed(("Impossible!\n"));
663	return VERR_INTERNAL_ERROR;
664	}
665
666	LogFlow(("RTFileQueryInfo(%RTfile,,%d): returns VINF_SUCCESS\n", File, enmAdditionalAttribs));
667	return VINF_SUCCESS;
668	}
669
670
671	RTR3DECL(int) RTFileSetTimes(RTFILE File, PCRTTIMESPEC pAccessTime, PCRTTIMESPEC pModificationTime,
672	PCRTTIMESPEC pChangeTime, PCRTTIMESPEC pBirthTime)
673	{
674	/*
675	* We can only set AccessTime and ModificationTime, so if neither
676	* are specified we can return immediately.
677	*/
678	if (!pAccessTime && !pModificationTime)
679	return VINF_SUCCESS;
680
681	/*
682	* Convert the input to timeval, getting the missing one if necessary,
683	* and call the API which does the change.
684	*/
685	struct timeval aTimevals[2];
686	if (pAccessTime && pModificationTime)
687	{
688	RTTimeSpecGetTimeval(pAccessTime, &aTimevals[0]);
689	RTTimeSpecGetTimeval(pModificationTime, &aTimevals[1]);
690	}
691	else
692	{
693	RTFSOBJINFO ObjInfo;
694	int rc = RTFileQueryInfo(File, &ObjInfo, RTFSOBJATTRADD_UNIX);
695	if (RT_FAILURE(rc))
696	return rc;
697	RTTimeSpecGetTimeval(pAccessTime ? pAccessTime : &ObjInfo.AccessTime, &aTimevals[0]);
698	RTTimeSpecGetTimeval(pModificationTime ? pModificationTime : &ObjInfo.ModificationTime, &aTimevals[1]);
699	}
700
701	if (futimes((int)File, aTimevals))
702	{
703	int rc = RTErrConvertFromErrno(errno);
704	Log(("RTFileSetTimes(%RTfile,%p,%p,,): returns %Rrc\n", File, pAccessTime, pModificationTime, rc));
705	return rc;
706	}
707	return VINF_SUCCESS;
708	}
709
710
711	RTR3DECL(int) RTFileSetMode(RTFILE File, RTFMODE fMode)
712	{
713	/*
714	* Normalize the mode and call the API.
715	*/
716	fMode = rtFsModeNormalize(fMode, NULL, 0);
717	if (!rtFsModeIsValid(fMode))
718	return VERR_INVALID_PARAMETER;
719
720	if (fchmod((int)File, fMode & RTFS_UNIX_MASK))
721	{
722	int rc = RTErrConvertFromErrno(errno);
723	Log(("RTFileSetMode(%RTfile,%RTfmode): returns %Rrc\n", File, fMode, rc));
724	return rc;
725	}
726	return VINF_SUCCESS;
727	}
728
729
730	RTR3DECL(int) RTFileRename(const char pszSrc, const char pszDst, unsigned fRename)
731	{
732	/*
733	* Validate input.
734	*/
735	AssertMsgReturn(VALID_PTR(pszSrc), ("%p\n", pszSrc), VERR_INVALID_POINTER);
736	AssertMsgReturn(VALID_PTR(pszDst), ("%p\n", pszDst), VERR_INVALID_POINTER);
737	AssertMsgReturn(*pszSrc, ("%p\n", pszSrc), VERR_INVALID_PARAMETER);
738	AssertMsgReturn(*pszDst, ("%p\n", pszDst), VERR_INVALID_PARAMETER);
739	AssertMsgReturn(!(fRename & ~RTPATHRENAME_FLAGS_REPLACE), ("%#x\n", fRename), VERR_INVALID_PARAMETER);
740
741	/*
742	* Take common cause with RTPathRename.
743	*/
744	int rc = rtPathPosixRename(pszSrc, pszDst, fRename, RTFS_TYPE_FILE);
745
746	LogFlow(("RTDirRename(%p:{%s}, %p:{%s}, %#x): returns %Rrc\n",
747	pszSrc, pszSrc, pszDst, pszDst, fRename, rc));
748	return rc;
749	}
750

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source: vbox/trunk/src/VBox/Runtime/r3/posix/fileio-posix.cpp@ 27042

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